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Mammillaria hahniana
filter_vintage Cactaceae Plants yard Succulents plants

Mammillaria hahniana

Old Lady Cactus

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Compact globular cactus featuring dense white woolly spines resembling an old lady's cap. Popular indoor succulent, produces pink crown flowers in spring.
yard Succulents plants wb_sunny Half-shade pets Not pet-safe
info Pot sizes shown are estimations. Real dimensions may vary depending on the merchant.
Merchant Pot Size Availability Price
Amazon.com - In Stock $10.99 Buy
Amazon.com - Out of Stock $19.97 Buy
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Plant Details

Common Name Old Lady Cactus
Family Cactaceae
Genus Mammillaria
Species Hahniana
Origin Mexico
Blooming Pink to magenta flowers form a crown ring in spring/summer.
Leaf Color Green-grey stem with white spines
Sunlight Half-shade
Category Succulents plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Cactus mix with high drainage, pumice or perlite added for aeration.

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Watering

Water sparingly during growing season (spring/summer). Allow soil to dry completely between waterings. Stop watering in winter dormancy.

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Sunlight & Care

Requires bright light. Protect from harsh midday sun in summer to prevent scorching of spines and skin.

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Fertilization

Apply diluted cactus fertilizer monthly during active growth period only.

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Pruning

Remove dead flower stalks or damaged spines carefully with tweezers.

Pest Control Mealybug Scale Insect Spider Mite

These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.

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Seasonal Periods

local_florist Flowering Period 3 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 12 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
thermostat

Growing Parameters

thermostat
Temperature
50° – 95°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
20% – 60%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
1000 – 30000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
100 – 2500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
10% – 40%
% volumetric
Water content in the growing medium
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Soil EC
300 – 1500
mS/cm
Electrical conductivity (nutrient concentration in soil water)
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Common Problems

Something wrong with your Mammillaria hahniana? Select a symptom to diagnose and fix the issue.

eco Sticky Leaves chevron_right
eco White Cottony Spots chevron_right

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